Choose Hydraulic Empire
Choose Hydraulic Empire if you want a Simulation experience. On Steam, it's currently about 20% cheaper on the Steam Store. Hydraulic Empire launched in 2015.
Hydraulic Empire vs Undefined Game Pack
Hydraulic Empire and Undefined Game Pack both land in Action, Strategy, Indie on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Action, Strategy, Indie on Steam. Hydraulic Empire (2015) is 10 years older than Undefined Game Pack (2025). Undefined Game Pack scores higher on Steam reviews (93.1% positive) than Hydraulic Empire (41.7% positive). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose Undefined Game Pack
Choose Undefined Game Pack if you want an Adventure experience. On Steam, it's the newer release (2025) and ships with the modern feature baseline. Undefined Game Pack launched in 2025.
Both Hydraulic Empire and Undefined Game Pack sit in Action, Strategy, and Indie on Steam, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 Hydraulic Empire |  Undefined Game Pack | |
|---|---|---|
| Released | 2015 | 2025 |
| Genres | Action, Strategy, Indie, Simulation, RPG, Casual | Action, Strategy, Indie, Adventure, RPG, Casual |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | 7.99 USD | 9.99 USD |
| Steam reviews | 41.7% positive (36 reviews) | 93.1% positive (29 reviews) |
| Multiplayer | Single-player only | Single-player only |
| Developers | Batholith Entertainment | Undefined |
Side by side
- Both share Action, Strategy, Indie on Steam.
- Hydraulic Empire (2015) is 10 years older than Undefined Game Pack (2025).
- Undefined Game Pack scores higher on Steam reviews (93.1% positive) than Hydraulic Empire (41.7% positive).
- Hydraulic Empire is currently ~20% cheaper on Steam than Undefined Game Pack (7.99 USD vs. 9.99 USD).
Hydraulic Empire vs Undefined Game Pack — FAQ
- Should I play Hydraulic Empire or Undefined Game Pack first?
- If you want chronology, Hydraulic Empire (2015) came out before Undefined Game Pack (2025). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Hydraulic Empire and Undefined Game Pack similar?
- They overlap on Action, Strategy, Indie on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.